Octahedral Rh(NH₃)₄(SCN)₂Cl permits only N/S linkage changes; Cl remains outside the sphere. For the union of all linkage forms, let l be the number of donor-mode compositions, g the total geometrical

Question

Octahedral Rh(NH₃)₄(SCN)₂Cl permits only N/S linkage changes; Cl remains outside the sphere. For the union of all linkage forms, let l be the number of donor-mode compositions, g the total geometrical forms, and s the total stereoisomers. Ligands are achiral and monodentate. Which (l,g,s) is correct?

TestHub · Accepted Answer

The compositions are NN, NS and SS. NN and SS each give Ma₄b₂, with two geometrical forms. NS gives Ma₄bc, again two, distinguished by cis/trans placement of the unlike ligands. All six are achiral, so l = 3, g = s = 6. Exchanging the labels on identical SCN ligands does not create another composition.

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